@software_guy everything :)
Messaging, team calls, groups (way faster than slack, ideal for small teams), follow thematic groups/channels, blogging (I have an own blog there), use it to storage files, make quick text notes.. pretty much everything :)
If you had to keep only 5 apps in your phone, which one would they be? The first one I would include is the calendar. This is because it is a very important tool and it helps me in keeping track of my appointments and meetings. The next app is the photo editor. I love taking pictures and editing them when I get home from work, this app makes it faster and easier for me. The third app would be the music player. It allows me to listen to all kinds of music, even if it is not downloaded yet on my phone. I also read a webpage about the educational apps and services for students that they can get in order to enhance their learning abilities.
aasaan